GitLab

* support spconv2.0

* resolve comments

* try to fix ut

* fix ut

* fix docs

* add spconv2 check in collect.env

* resolve comments

* fix docs

* fix comments

* Reduce the open3d dependency

* Reduce the open3d dependency

* Reduce dependency of open3d if open3d is not used

* remove the warning in show_result

* add model stastics

* add model stastics and polish docs

* add model stastics and polish docs

* fix

* chmod +x stat.py

* Reduce requirements if waymo dataset is not used

* Update waymo.md

* Update optional.txt

* Update waymo.md

Add instructions of requirements/optional.txt related to waymo